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3-Acetyl-2,5-Dichlorothiophene

    • Product Name 3-Acetyl-2,5-Dichlorothiophene
    • Alias AKOS BBS95936
    • Einecs 410-050-4
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
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    Specifications

    HS Code

    131030

    Chemical Name 3-Acetyl-2,5-Dichlorothiophene
    Molecular Formula C6H4Cl2OS
    Molecular Weight 195.07 g/mol
    Cas Number 52225-27-7
    Appearance Yellow to brown liquid
    Purity Typically >97%
    Solubility Soluble in organic solvents
    Structure Type Thiophene derivative
    Synonyms 2,5-Dichloro-3-acetylthiophene
    Smiles CC(=O)C1=CSC(=C1Cl)Cl
    Inchi InChI=1S/C6H4Cl2OS/c1-3(9)4-2-5(7)10-6(4)8/h2H,1H3

    As an accredited 3-Acetyl-2,5-Dichlorothiophene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 100g package features a sealed amber glass bottle, clearly labeled "3-Acetyl-2,5-Dichlorothiophene," with hazard warnings and batch details.
    Shipping 3-Acetyl-2,5-Dichlorothiophene is typically shipped in securely sealed containers to prevent leakage and degradation. The package is clearly labeled with hazard and handling information. During transit, it is protected from moisture, direct sunlight, and incompatible substances, following all local and international regulations for the transport of potentially hazardous chemicals.
    Storage 3-Acetyl-2,5-Dichlorothiophene should be stored in a tightly sealed container, protected from light and moisture, in a cool, dry, and well-ventilated area. Keep away from heat, sparks, open flames, and incompatible materials such as strong oxidizing agents. Properly label the storage area and ensure the chemical is kept out of reach of unauthorized personnel.
    Application of 3-Acetyl-2,5-Dichlorothiophene

    Applications of 3-Acetyl-2,5-Dichlorothiophene in Industrial Manufacturing

    As a direct manufacturer of 3-Acetyl-2,5-Dichlorothiophene, we supply this intermediate to downstream producers operating in specialized fine chemical sectors. The following real-world applications illustrate its advanced role in industrial synthesis, where strict regulatory compliance, controlled formulation, and precise process integration are essential to obtain reliable, high-purity end products across multiple industries.

    1. Pharmaceutical Intermediate Synthesis

    Our material serves as a core building block in the production of advanced heterocyclic scaffolds used by API plants, particularly in the synthesis of small-molecule drugs for anti-infective and anti-inflammatory indications. Many generic drug synthesis routes require selective acylated thiophene derivatives to ensure high yield and purity in active ingredients. Process engineers integrate this compound during targeted heterocyclization, enabling downstream isolation of key intermediates under GMP protocols.

    Industry compliance standards

    • Current Good Manufacturing Practice (cGMP) per 21 CFR Parts 210/211 (FDA)
    • ICH Q7: Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • USP <797> / EP / JP monographs for pharmaceutical intermediates
    • EU REACH registration for raw material handling and worker safety

    Typical usage ratio

    • Applied at 0.2–1.5 molar equivalents, based on final API batch size and specific reaction scheme; stoichiometry may adjust in pilot runs depending on reactivity and yield optimization.

    Downstream process integration

    • Charged during initial multi-step synthesis stage for heterocycle formation, typically in a sealed reactor under inert atmosphere and controlled temperature (50–80°C).
    • Reaction monitored continuously to limit overacylation and prevent target structure degradation.

    Final product types

    • Bulk active pharmaceutical ingredients such as advanced antibiotics and nonsteroidal anti-inflammatory drug (NSAID) intermediates
    • Synthons for kinase and protease inhibitor development

    2. Agrochemical Intermediate Manufacturing

    Major agrochemical formulators employ this material for the synthesis of chlorinated thiophene-based intermediates required in the production of herbicides and fungicides. The compound is critical in introducing structurally stable acyl groups that determine biological activity and field persistence of final crop protection agents. It enters the process at the key intermediate coupling step to improve conversion rates and lower waste in multi-ton production.

    Industry compliance standards

    • ISO 9001:2015 Quality Management System for chemical synthesis
    • European Regulation (EC) No 1107/2009 on Plant Protection Products
    • FAO/WHO specifications for technical grade agrochemical intermediates
    • Globally Harmonized System (GHS) for labeling and transport

    Typical usage ratio

    • 0.4–2.0% (w/w) depending on downstream molecular coupling target; higher ratios may be used for bulk coupling formulations to maximize throughput.

    Downstream process integration

    • Dosed during condensation and cyclization stages in closed chemical reactors, often under basic or catalytic conditions, to generate target thiophene-based herbicide or fungicide intermediates.
    • Typical process temperatures range 65–95°C with solvent recovery systems in place for regulatory compliance.

    Final product types

    • Technical grade intermediates for triazole-based fungicides
    • Chlorinated herbicidal precursors for broadleaf weed and grass control agents

    3. Specialty Dye and Pigment Synthesis

    Manufacturers of specialty dyes rely on 3-Acetyl-2,5-Dichlorothiophene for the preparation of performance thiophene motifs integrated in organic pigment molecules. These structural units enhance thermal and photostability in both aqueous and solvent-based pigment systems, widely adopted in automotive and textile coloration processes. The additive enters pigment synthesis to tune hue intensity and promote dispersion during final dye blending.

    Industry compliance standards

    • REACH Regulation EC No 1907/2006 for pigment precursors
    • ISO 9001 for QC management in colorant manufacturing
    • EN 71-3 Safety of Toys (colorant migration limits, EU consumer goods)
    • ZDhA guidelines for specialty dye materials in industrial coatings

    Typical usage ratio

    • 0.5–1.2 molar equivalents, proportional to other aromatic or heterocyclic cores in the pigment blend; formulation is fine-tuned during pilot-scale runs to achieve desired color metrics.

    Downstream process integration

    • Introduced in the core condensation reaction for pigment molecule synthesis, typically in solvent-free or low-solvent conditions at 80–120°C; pigment slurry is then filtered and milled before dispersion into base media.
    • Color metrics verified at each batch for batch-to-batch consistency.

    Final product types

    • High-performance organic pigments for automotive OEM coatings
    • Disperse dyes for synthetic fiber and industrial textile processing
    • Special effect colorants for plastic and ink manufacturers

    4. Electronic and Photovoltaic Material Precursors

    This compound is a valuable precursor in the field of organic electronic material synthesis, where it forms part of the backbone in specialty conductive polymers and organic photovoltaic (OPV) blends. Leading manufacturers adopt it in the preparatory stage of material synthesis for high charge carrier mobility and enhanced stability in finished device components, essential for thin-film transistor (TFT) and organic solar cell applications.

    Industry compliance standards

    • IEC 62899-202 for printable electronics materials
    • ISO 14001 Environmental Management for chemical production
    • RoHS Directive (2011/65/EU) for hazardous substances in electronics
    • REACH Annex XVII restrictions for chemical safety

    Typical usage ratio

    • Typically 0.3–1.8 molar equivalents, optimized per polymerization batch to accommodate matrix and electronic property targets of downstream consumers; formulation may be rebalanced for device-specific requirements.

    Downstream process integration

    • Fed into Suzuki or Stille coupling reactions for backbone construction in conjugated polymer systems, operated under inert atmosphere and controlled heat up to 120°C; processed further for functional group adjustment and purification.

    Final product types

    • Solution-processable organic semiconductors for TFT arrays
    • Active-layer donor and acceptor compounds for organic photovoltaic cell fabrication
    • Specialty conducting polymers used in printed electronics and flexible display substrates
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    Certification & Compliance
    More Introduction

    3-Acetyl-2,5-Dichlorothiophene: Proven Quality from Factory Floor to Final Formulation

    Looking Beyond the Label – What Sets Our 3-Acetyl-2,5-Dichlorothiophene Apart

    Working every day amid reactors and process controls, we handle 3-Acetyl-2,5-Dichlorothiophene—CAS 13624-68-1—in quantities large and small. Every batch comes straight from our own lines, not an import, repack, or series of trade-ins. For years, we have responded to requests from research groups, pharmaceutical teams, agrochemical developers, and flavor and fragrance labs, each seeking a consistent and traceable product. No paperwork chase, no unknown supply chains; this compound leaves our production in the condition we claim, with no surprises halfway across the world or halfway through a synthesis.

    What We Know – Our Experience in Producing and Using 3-Acetyl-2,5-Dichlorothiophene

    Producing 3-Acetyl-2,5-Dichlorothiophene isn’t simply a matter of mixing things up and running with it. The challenge comes not only from precise temperature control or solvent handling, but also from subtle factors such as trace water in feedstocks or the quality of the catalysts. Over the years, we’ve improved filtration and staged distillation specifically for this product. Every kilogram catches our eye; we remain alert for color, clarity, and even minor odorous shifts. The molecule’s sulfur core and twin chlorines open doors for further derivatization, but they also mean that careless process control can quickly taint a batch or introduce difficult-to-remove byproducts.

    Some customers ask why it matters. Out-of-spec 3-Acetyl-2,5-Dichlorothiophene often causes dropped yields down the road. A customer working on novel triazoles or sulfoxide intermediates noticed unrelated smells and erratic NMR spectra. After looking into their supply, residual starting material and mixed isomers were clear. Sourcing directly brings intelligence back into our system—questions about purity, melting point, color, and storage stability all come back to us, not a desk at another company or an anonymous shipping dock. Seeing what our product does in the field, turning into everything from crop protection agents to unique aroma compounds, keeps our technical team on track and sensitive to even subtle shifts in process.

    Specifications: Not Just Numbers, but the Result of Decades on the Line

    3-Acetyl-2,5-Dichlorothiophene comes from a line that has seen upgrades, troubleshooting, and investments that don’t show up on datasheets. We maintain assay above 99%, color well below APHA 30 in every batch. Our technicians check for the absence of 2-chlorothiophene and related pre-cursors, and limit water below 0.1% through Karl Fischer direct titration. Most customers request delivery as a clear or slightly yellowish liquid, although colder climates may cause temporary crystallization—thawing brings the product back with no decomposition or loss of purity. By controlling solvent residues and closely monitoring the acetyl group’s integrity (via IR and GC), we provide a product that moves seamlessly into halogenation, reduction, coupling, or Grignard endpoints.

    The Role of 3-Acetyl-2,5-Dichlorothiophene in Today’s Applications—More Than a Paper Value

    The chemical space around substituted thiophenes remains active territory. 3-Acetyl-2,5-Dichlorothiophene in particular bridges a gap between functionalization reactivity and ease of handling. In-house teams often highlight its acetyl group positioning as ideal for further manipulation, especially when aiming for functionalized aryl rings or fused heterocycles. Compared to more symmetric dichlorinated thiophenes, the 3-acetyl ring handles ring activation with less side-reaction, cutting down on labor-intensive purification steps. An example comes from an agrochemical synth route we supported recently: using our high-purity 3-Acetyl-2,5-Dichlorothiophene, our customer saw over 5% increase in final yield and smoother chromatography at scale—a result they attributed directly to tighter impurity control and predictable reactivity of our product.

    Through feedback, it has become clear that product features—such as a consistent acetyl stretch in IR, reliable elemental analysis, and no ghost peaks on GC—matter a great deal. This is where tight vertical integration pays off. A buyer who came to us after years of using “generic” stock noted how their NMR profiles lined up batch after batch, cutting out hours of troubleshooting and method development. In custom manufacturing, every shortcut means more time for their own innovation, not cleaning up after the supplier.

    Knowing the Market: Why Our 3-Acetyl-2,5-Dichlorothiophene Demands a Closer Look

    The global chemicals market often has gaps between what end users need and what arrives in their plant. Traders and “brokers” talk up inventory, but they usually have no technical hand in production, no memory of what has failed, and no ongoing experience with reliability. By producing every kilogram ourselves, our team knows which raw materials matter and which steps require patience or a lighter hand. For example, trace iron, often ignored in upstream thiophene chlorination, can leave catalytic poison for downstream uses. Our improvements came not from paperwork but labor—better filtration, constant monitoring, investment in glass-lined reactors over old steel.

    Working with a diverse mix of customers—from active pharmaceutical ingredient players to innovators making specialty flavors—means that we see both ends of the value chain. Their feedback pushed us beyond “good enough.” Some use the product neat, others demand custom packing and oxygen scavenge techniques for months-long transit. We have shipped to sites with extreme humidity, high altitude, and demanding quality systems. Each of these challenges gets recorded, shared, and ultimately solved at the production and technical level. Our reputation grows not only through specs, but through stubborn follow-up and attention to every order.

    Using 3-Acetyl-2,5-Dichlorothiophene—Inside Stories from the Factory Floor

    On an average production day, operators at our plant manage multi-step syntheses involving chlorination tanks, vacuum distillation equipment, and low-temperature crystallization. Handling the precursor, 2,5-dichlorothiophene, calls for careful dosing and temperature ramps, as runaway reactions can cause tar formation or catalyst poisoning. Swapping out evaporation hardware after a run revealed residues that, if left unchecked, would bleed into the next batch—not worth the risk for our standards. Years ago, a small upset led to cross-contamination that appeared as a faint UV-active impurity in the final product. Rather than ignoring it, we tracked the root cause, re-trained operators, and invested in a cleaning regime that kept later batches spotless.

    Real-world production means dealing with off-spec inputs. Sourcing fresh acetyl chloride and controlling batch sizes improves reproducibility at the lab scale and in the big reactors. Operators have learned to “listen” to the process—watching for unusual boiling points, off-odors, or color changes. Industry experience shows that neglecting these signals brings problems for end users later: hard-to-separate residues, increased maintenance downtime, or even safety hazards in scale-up. Our team takes pride in stopping a process to investigate irregularity, rather than pushing for short-term quotas at long-term quality’s expense.

    Differences Compared to Other Thiophenes—What Direct Production Teaches Us

    Not every dichlorothiophene performs equally in the lab or in manufacturing. The 3-acetyl group, in our experience, resists hydrolysis and coloring reactions better than 2- or 4-acetyl analogs under practical use conditions. Storage at slightly elevated temperatures still keeps the product within spec, even after months. Competing products, made in batches meant mainly for bulk chlorothiophene markets, give less control over isomer ratios and more variability batch-to-batch. Our system tracks the synthetic pathway, limiting unwanted substitution. In-house analytics pin down the exact composition, letting us keep customer documentation, MSDS, and COA in sync.

    Working directly at manufacturing scale has taught us that solvent residues or batchwise pre-treatment practices shift impurity patterns. By making every kilogram ourselves, we pursue the best-case scenario each time. Incoming inquiries from new sectors, like electronics intermediates and high-end material sciences, keep pushing expectations higher—tolerance for minor off-notes, color instability, or trace metallics has dropped, not only from regulators but from the fast-moving teams working on new intellectual property.

    Building on Facts, Not Hype—Keys to Long-Term Performance

    Technical assurance comes not only from our lab bench but from every operator and technician with years under their belt. We source feedstock directly, never chasing spot cargos. By sticking with proven processes and investing in instrument upgrades, like in-line FTIR and GC-MS, we track every step from raw material receipt to final drum. Quality is enforced at the point of production. We fix problems before they reach the customer, not after. Some markets, especially pharma, demand strict documentation; our team hasn’t waited until regulation comes—we built in this level of recordkeeping from day one. Every shipped kilogram matches the analytical record, available for inspection at a moment’s notice.

    Training follows a hands-on model. Line workers and technical leads learn process troubleshooting firsthand—a noisy condenser or a faint color change sparks quick investigation. Older practices, such as relying on third-party QC or unrecorded operator tweaks, have no place in our system. This brings not just pride but accountability. End users can visit, audit, drill into real production and see that results match claims. In the rare instance of a problem, we respond fast—with a fix, not a drawn-out investigation or shifting of blame.

    Supporting New Applications—Lessons from Collaboration

    The base of 3-Acetyl-2,5-Dichlorothiophene applications keeps widening. In pharmaceuticals, its reactivity supports not only one-off syntheses but late-stage modifications where trace impurities have outsize effects. Through partnering on method transfer, we’ve seen teams replace more hazardous thiophenes, citing our product’s stability, predictable response to reductive steps, and easier workups. Plant protection developers choose it for efficient access to selective intermediates; in fragrance and materials, it unlocks new odor notes without the off flavors seen with thiophene byproducts.

    We keep hearing stories from research and production users about requirements we hadn’t considered. Some need ultra-low solvent content, others want extended shelf life under humid storage, a few push for special packaging away from light or oxygen contact. By controlling each stage, we flex in real time to these needs—shifting batch size, process order, or packing as required, but always from a foundation of direct production. This dialogue improves product quality, but also gives every customer a stake in the quality they receive.

    Challenges Ahead and How We Respond: Continuous Refinement over Grand Promises

    Like any manufacturer, we face new tests year after year. Raw material variability, changes in environmental regulations, or customer push for higher purity all create regular need for review and reinvestment. For instance, a raw materials disruption during a recent global supply chain crunch called for new sourcing strategies and direct negotiations, not just juggling logistics. Through every difficulty, our combination of process memory and on-site control let us keep orders moving, with transparency to every querier who called our plant or technical service line.

    The pressure for better environmental stewardship never lets up. We reduce waste streams through tighter yield targets, and pursuit of greener solvents for extraction. With each update, technician training follows, not lagging behind the engineering change. The people on line keep our system honest—if an adjustment doesn’t track in quality, we dial it back. End users see this attention to detail in the smoothness of their own production and the absence of “unidentified impurities” that are common in lower quality stock. The whole improvement cycle centers on firsthand feedback and pride from those who make every batch.

    Final Word—Direct Manufacturing Means Lower Risk, Greater Value

    The real value of 3-Acetyl-2,5-Dichlorothiophene made in-house shows every day through lower complaint rates, higher user satisfaction, and open communication with those pushing the boundaries in their fields. Whether sent across the city or abroad, each lot carries our name and our commitment. Customers looking for consistency, technical knowledge, and adaptable supply can see the difference—not in speculative language but in hard results, analytical sheets, and, most importantly, in their own outcomes. We welcome every conversation and every challenge, because each improves the next batch coming off our line.

    Direct Engagement—The Ongoing Conversation

    Every new customer, every new inquiry, brings a new challenge and a chance to refine what we already know. As a manufacturer, we don’t merely deliver 3-Acetyl-2,5-Dichlorothiophene; we partner in each synthesis, share in each adjustment, and respond from the factory floor to the end use. This ongoing relationship means every customer knows where their product comes from, why it performs, and who answers the call if something shifts. The tight loop between real-world feedback and in-house production delivers results that stack up day after day, batch after batch.